Mothproofing fabrics



Patented Aug. 23, 1938 MOTHPROOFING FABRICS Lindley E. Mills and WilliamW. Allen, Midland,

Mich, assignors to No Drawing. Applicationoctober 16, 1937 Serial N0.169,471

Claims.

This invention relates to the protection of fur, hair, feathers, wool,etc. against the attack of It more particularly concerns themothproofing of fabrics.

5 Some agents heretofore employed for mothproofing are capableofattacking or stainingthe mothproofing agents are highly volatile andimpermanent in nature treated material. Other out of woolen material andthe like. 25 Among the objects of this invention 'is to prootherwiseinjuring the material.

We have discovered that the'above advantages can be obtained byemploying mono phenyl-di (ortho-xenyD-phospha'te as a mothproofing (c1.z 1 5) an odorless water-white liquid boiling at 2739-275 0. at0.5millimeter-.pressure and hav ing a specific gravity of 1.198 at 60/4C. This .In the numerous testsvcarried out to establish 3 phosphate asand other maand to woolen resistant and clothes moth or the tapestrymoth, and concen- The following examples are illustrative of cerv tainmodes in which our invention may be ap' plied, hut are not to beconstrued as limiting the same.

' a Example 1 I r t A number. of samples of white wool mohair cloth weresaturated with 3 and'5 per cent soluof mono-phenyl-di- (ortho-xenyl)-phosphate in ethyl alcohol, thereafter pressed to reof the black carpetbeetlewere placed and the H "1 or other attack directlyattributable'tothe beetle v relative cent. Examina- In each instance one of the 5larvae was dead on the samples impregnated with 5 per cent phosphatesolution. In the case over the same period upon mohpirtreated by 'iming,showed no discoloration. The preservative mersion in ethyl alcoholand-petroleum distillate showed no tendency to crystallize out or tovolaand heavy feeding at the end of thethree-weekMono-phenyl-di-(ortho-xenyli -phosphate has a p r j b fin f undtojbesubstantially non-toxic to hu- Example 2 mans and: animals. For example.7 m city Samples of the impregnated mohair described gf fzggy ifizzgg'gtg ggagmgg in the foregoing example were thoroughly dried ofwthe mer mm m weight and then immersed and well washed in an excess f the a gg a is o of a 4 petroleum distillate dry-cleaning fluid. o m y m sampleswere dried. and exposed to cameflammable and has been'found of valuefor-rebeetle larvae as described in-Example 1. 'or the es g sem w if iEmmy mews-ted soiviiiii fi fifi -tiinyi-n (time 1t Percent P o h slution, one sampl s 8- "xenyll-phosphate forming solutions which may nofeeding at the end of two-weeks, .with very- I a a slight feeding at theendof three weeks m i g g wands b v fbq a cn' w v: 2:33: ii' t fiimp isrigi-naliy irfi piez @nmmm swede mimemwith a 5 per cent Phosphatesolution showed no gg gffg ggfig fi a 'mfig: feeding at the end of threeweeks. 7 .7 I hols such-as methyl and isopropyl aic oi; etc.

- x mp 3 Perfumes, coloringagents and the I may be Samples of the woolenmohair fabric, followincimmted in f ot n in'g impregnation asdescribedinllixample 1 with a 3 and 5 per cent solutions of'mono-Pheny1di- Q gm xg mkg wfi g j '(ortho-xenyD- hosphate, were-dried and therem zafter weathered out-of-doors for a number of ,9 9 compo- FTW 'Y' 9, 9'3-days e pos d to sun,.wind, and rain. when care, WQfiWPPbfi i m i'vw 'm'd beetlelarvae wereintroducedinto these' same $3?? 75 x eanins Dies,none of them showed any feeding after: nt r m :3 three weeks'incubation.with; f m 4 n w r by Samples of the im regnated woolen mohair, APmcessmr m 9 n c5 afterdrying, were thofioughly washed in a 0.5 per a fio h ma er a bject to attack by moths cent solution of Ivory soap inwater at a tempera-i Ym treating such material h hire of 0. After 20minutes contact with the 1 aa h ienn o h soap solution, these testsamples were m A process for -mothbrooflng woolen fabrics running waterand dried. Upon infestation with and materials subject to a by mom 40the carpet beetle larvae, it was found that after' which 9 3 treatingsuch mater! with two weeks incubation none of the impregnated vflonllwmpmmfl mono? 'Q'Q samples were attacked, while after three weeksWyn-Phosphate d in an 9 .only one of the samples showed a very slightin- PW:

ury which might have been attributable to at- A process for moihpmflnflmien i: tack by the larvae. and other materials subject to attack bymoth! which "comprises treating such materials with a Example 5 comosition comprising mono-phenyl-dir-(ortho- In a similar mannerwoolencloth was impreg- 'P p dissolved in a lower fl pb hated with a 5 percent solution of mono-phenylalcohol. v 5.di-..(ortho.-xenyl)-phosphatein "carbon tetra 4-. 'A process formothproofing woolen fabrics weeks, the

impregnated cloth- -was a by the larvae after one week, moderate feedingafter two weeks,

chloride. Following infestation with the black larvae carpet beetle andincubation for three cloth was found to be unattacked by thebeetlelarvae and to be unaltered as regards hysical characterist cs.

In the foregoing and the fabric itself was notexamples no stainingmt'tnethe impregnated fabric, nor was the the tilize from fabric greasy oroily to and other materials subject to attack by moths which comprisestrea a composition comprising mono-phenyl-di-(orthoxenyl)-'phosphate,diss0lved in a liquid chlorinated hydrocarbon.

teriall with'a 5. A compositions-consist ng of material liable thereilto attack by moths; havingincorpora mono-phenyl-di-(ortho-xenyn- INDLI B1011.8.-

